Cryptoblepharus egeriae Boulenger, 1889

Blue-tailed skink, Christmas Island forest skink



Taxonomy & Nomenclature



Conservation Status

Smith et al. (2012) reported that a single population of Cryptoblepharus egeriae persisted in the southwestern end of the island, however this population seems to now be extinct (Woinarski & Cogger, 2013).



Christmas Island, Australia


Biology & Ecology










Original scientific description:

Boulenger, G. A. (1889). On the reptiles of Christmas Island. Proc. Zool. Soc. London 1888: 534-536.


Other references:

Agius, Jessica Esther et al. (2021). Genomic Insights Into the Pathogenicity of a Novel Biofilm-Forming Enterococcus sp. Bacteria (Enterococcus lacertideformus) Identified in Reptiles. Frontiers in Microbiology 12: 635208.

Andrew, Paul, Cogger, hal, Driscoll, Don, Flakus, Samantha, Harlow, Peter, Maple, Dion, Misso, Mike, Pink, Caitlin, Retallick, Kent, Rose, Karrie, Tiernan, Brendan, West, Judy and Woinarski, John C. Z. (2016). Somewhat saved: a captive breeding programme for two endemic Christmas Island lizard species, now extinct in the wild. Oryx. doi: [Abstract]

Cogger, H. G. and Sadlier, R. A. (1981). The terrestrial reptiles of Christmas Island, Indian Ocean. Australian Museum, Sydney. 194 pp. Report to the Australian National Parks & Wildlife Service. [relevant citation?]

Cogger, H., Sadlier, R. A. and Cameron, E. (1983). The Terrestrial Reptiles of Australia's Island Territories. Australian National Parks and Wildlife Service, Special Publication No. 11. Australian Government Publishing Service: Canberra. 80 pp.

Emery, Jon-Paul et al. (2021a). Survival of an Extinct in the Wild skink from Christmas Island is reduced by an invasive centipede: implications for future reintroductions. Biological Invasions 23: 581-592. DOI: [Abstract]

Emery, Jon-Paul et al. (2021b). The lost lizards of Christmas Island: A retrospective assessment of factors driving the collapse of a native reptile community. Conservation Science and Practice 3:e358. doi:

Lister, J. J. (1888). On the natural history of Christmas Island in the Indian Ocean. Proceedings of the Zoological Society of London, 512-531. [relevant citation?]

Mertens, R. (1931). Ablepharus boutonii (Desjardin) und seine geographische Variation. Zool. Jahrb. Syst. 61: 63-210.

Oliver, Paul M., Blom, M. P. K., Cogger, Hal G., Fisher, R. N., Richmond, J. Q. and Woinarski, J. C. Z. (2018). Insular biogeographic origins and high phylogenetic distinctiveness for a recently depleted lizard fauna from Christmas Island, Australia. Biol. Lett. 14: 20170696.

Smith, Michael J., Boland, Christopher R. J., Maple, Dion and Tiernan, Brendan. (2012). The Christmas Island blue-tailed skink ([i]Cryptoblepharus egeriae[/i]): a survey protocol and an assessment of factors that relate to occupancy and detection. Records of the Western Australian Museum 27(1): 40-44.

Woinarski, John and Cogger, Hal. (2013). Australian endangered species: Christmas Island Forest Skink. The Conversation, 19 September, available online:


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